Casing-head for oil and gas wells.



A. G. NOLAN.

CASING HEAD FOR OIL AND GAS WELLS.

APPLIOATION FILED JAN. 9, 1912.

, 1,035,630. Patented Aug. 13,1912.

Inventor r I I Attorneys To all whom it may concern UNITED STATES PATENT OFFICE.

ALBERT'G. NOLA N, 0F CAMDEN, WEST VIRGINIA,

OASING-HEAID FOR OIL AND 'GAS WELLS.

Be it knownthat LYALBERT G. NOLAN, a

citizen of the United States, residing at Camden, in the county of Lewis and State of West Virginia, have invented a new and useful Casing-Head for Oil and GasWells,

of which the following is a specification.

This invention relates to casing heads for gas wells.

The primary object of the invention 1s to provide ahead construction which will prevent the escape of oil and gas and at the same time prevent the tube from falling within the well.

In the drawings, Figure 1 is a vertical section. Fig. 2 is a top plan view.

In the drawings, 10 designates the'casing coupling into which the casing 11 is screwed. The coupling 10 isprovided with a shoulder 10' upon which the casing ring 12 seats itself, the tube ring 14 resting upon. said casing ring and surrounding the tube 15.

The conical hood '16 is formed with the annular flange 17 which overhangs the flange 18 of the coupling '10, said flange 17 being rovided with openings through which the its 20 pass. The member 16 is formed with the annular rim 21 which registers with the annular recess 24 formed in .the coupling, this recess being filled with packing 25. It will be noted that as the bolts 20 are a ti htened the rim and packing will form an gland 31 extends within the larger bore, the.

tapered end portion 31 coacting with the tapered wall 28 to force the packing, against the tubing 15. The gland 31' is formed with the flange 32 .which corresponds with flange I Specification of Letters Patent. Application filed January 9, 1912. Serial No. 070,273. a

These flanges are bolted together and areadjusted to force the packing in contact with the tube to prevent the escape of oil and gas. It will be noted that this construction provides an oil and gas tight joint between the casing and the tube, preventing the oil and gas from passing aroundthe PatentedAug.13,1912.

33 of the tubular extension of the hood.

ing ring resting upon said shoulder and a tube ring supported by said casing ring.

' 2. Acasing head for oil wells, consistin of a coupling, said coupling belng formed with an mteriorly disposed shoulder, a casing ring supported by said shoulder, a tube ring supported by said casing ring, a conical hood'supported by said coupling, said hood being formed with a cylindrical extension provided with a contracted neckadapted to contact with the well tube and-a gland adjustably-supported with said cylindrical extensipn.

- 3. A casing head for oil wells, consisting of a coupling, acasing ring supported by said coupling, a tube ring supported by said casing ring, a conical hood, said hood being formed with a ribarran ed to extend within a groove in the couplin said coupling and hood being formed with apertured flanges said hood .being formed with a contract neck which surrounds the well tube.

In testimony that I claim the foregoing as my fawn, I have hereto aflixed my signature in the presence of two witnesses. I

'- ALBERT G. NOLAN.

Witnesses: 

